Every station that daily temperature contracts settle on, on one canvas. The shading is the National Weather Service forecast; the dots show how today is running against the forecast that was issued for it. Click a city for its chart.
Not on this canvas:
One dot per station. In the today view, colour is the sign of observed-so-far minus the NWS high issued for the day, and size is the gap.
running warmer running cooler
The pale field is the NWS forecast, cool blues to warm reds, interpolated between the listed stations. It is derived here, not an NWS product; the official field is the NDFD grid.
PHL 88° (−5) reads: Philadelphia, 88°, five degrees below the reference. Labels move out of each other’s way and never cover another station’s dot.